Sebastian g



(No Model.)

- S. G. BRINKMAN.

ELECTRIC MOTOR.

No. 570,424. Patented Oct. 27, 1896.

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UNITED STATES PATENT OFFICE.

SEBASTIAN G. BRINKMAN, OF NE\V YORK, N. Y., ASSIGNOR TO THE NE\V YORK ELECTRIC MOTOR AND VENTILATOR COMPANY, OF SAME PLACE.

ELECTRlC MOTOR.

SPECIFICATION forming part of Letters Patent No. 570,424, dated October 27, 1896.

Application filed June 27, 1895. Serial No. 554,176. (No model.)

To (ZZZ whont it may concern:

Be it known that I, SEBASTIAN G. BRINK- MAN, of New York city, New York, have invented an Improved Electromotor, of which the following is a specification.

My invention relates to an improved construction of the armature, which I provide with a surrounding soft-iron jacket. This jacket not only serves as a means for attaching the armature to its shaft by a pair of heads or spiders, but it also serves to produce a uniformity in the magnetic flux that passes through the armature.

In the accompanying drawings, Figure 1 is an end view of my improved electromotor; Fig. 2, a vertical longitudinal section on line 2 2, Fig. 1; Fig. 3, a cross-section on line 3 3, Fig. 2; Fig. 4, a horizontal section, partly in plan, on line 4: 4:, Fig. 1. Fig. 5 is a cross-section of one of the field-magnet plates on line5 5, Fig. 3 and Fig. 6, a similar section of one of the armature-plates on line 6 6, Fig. 3.

The letters a represent a pair of frames that are connected by bolts 0, which pass through the fieldmagnets. The frames (1, are pro vided with proper bearings, in which turns the armature-shaft Z). Upon this shaft are mounted a pair of heads or spiders (Z, made of nonconducting material and provided with flanged rims. These rims form the supports for atubular soft-iron jacket 6, Fig. i, which is in this way secured concentrically to and revolves with the shaft b. The heads (Z have tapped eyes that engage correspondinglythreaded sections b of shaft 1) and permit the heads to be screwed up until the jacket 0. is properly seated.

Within the jacket 6 are contained the armature-plates f, connected by bolts f and the armature-winding g, the latter passing with its ends through perforations in one of the heads (Z to the commutator 72.

The jacket 6 should be of such a diameter as to be in metallic contact with the teeth of the armature-plates f, and in this way the jacket serves to equalize the magnetic cur rents passing through such plates and to pro duce a uniform magnetic flux from pole to pole. The length of the jacket should be such that it projects beyond the ends of the winding and offers a large chamber for the reception. of the coil. Thus the jacket forms a means for sustaining the armature plates and coils and connecting them to the shaft in such a manner that a maximum quantity of work may be extracted from such armature.

"L are the plates constituting the field-magnets, and j are the fieldmagnet windings, all assembled in the usual manner. The current may enter at 7:, go to the windings j, thence to commutator h, armature-winding g, and out at Z, as usual.

\Vhat I claim is 1. The combination in an electromotor of the armature-shaft with a pair of heads or spiders supported thereon, a jacket supported by the heads or spiders and armature plates and coils inelosed by the jacket,.the ends of the jacket being in contact with the outer edges or teeth of the spiders, substantially as specified.

2. The combination in an electromotor, of an armature-shaft having threaded sections with. a pair of heads or spiders having tapped eyes adapted to engage said sections, a softmctal jacket supported by said heads or spiders and armature-plates inelosed by and in contact with said jacket, the ends of the jacket being in contact with the outer edges or teeth of the spiders, substantially as specified.

3. I11 an electromotor the combination of field-m agnet plates and armature-plates composed of soft-metal bodies, with a soft-metal jacket inelosing the armature-plates, heads or spiders for supporting the jacket and an armature-sliaft for supporting the heads or spiders, the ends of the jacket being in contact with the outer edges of the teeth of the spiders, substantially as specified.

4-. In an electromotor, the two frames (1, bolts 0, for connecting them and which pass through the field-magnets, the shaft 1) j ournaled in said frames; the tubular soft-iron jacket 6-, and the non-conducting closed heads applied to the ends of the jacket, combined with the plates f, and winding g, placed in the closed chamber, the field-magnet plates 2', the winding j, suitable connecting-wires, and armature. substantially as described.

SEBASTIAN G. 'BRINKMAN. 

